Guard for wood-heel turning machines



sept. 22, 1931'.

W. J. SHAW ET AL GUARD FOR WOOD HEEL. TURNING MACHINES Filed Oct. 29, 1927 2 Sheets-Sheet l IIII we@ Zeg IJ/7a zu fag'.

Sept. 22, 1931. w. J. sHAw ET AL 1,824,375

GUARD-FOR WOOD HEEL TURNING MACHINES Fngd oct. 29, 1927 2 sheets-sneer 2 Patented Sept. 22, 1931 wsLEYfJ. .OFHAVERHILL AND' MILES.. E fmsfromor. GRQVEIQANR.

cnusmrgasslenonsmg NEWKENGLAND woop .HEEuGdn Raymann Masses. n oHUsfETTS., 'itGOM?gna-Aitrcp,i\r1,0F` MAssAeHnsEmTs L GUARD. ammo-@HEEL TURNING ,MAQHmESl .K Application ledctoberjz-S, 1927. `Serial No. 229,729.

Thelpresent invention relatestozsafetyi de-1 vicesffor proteetingoperat'ors from accidental.

Contact with: cutting knives, and morefparticularly to. guardsforfthe-cuttersaof woodlh'eele turning. machines.

The nan-re and :the objects'. of theinventionv will be explained in connection with the; aecompanying drawings, in.whicli-'Flzi'gA 1 is. an elevation of'a portionY of r' a i Wood-heel-turn ing machine showing: one embodiment, of fthefl presentiinvention; Figs.V 2.and3 .are sections taken upon. .tl1`e.lin.es -2-'2 and 'f3-3 .of .'Fig. 1, respectively, looking in--thedirection of the arrows; Fig;` 4 isaplanf-,andfFigi 5 is a. View,

similar.- to. Fig. l1', showingfonel of' the guards.-

uncovering its -cutter.. n

One Y of 'the/operations lconnected withl the manufacture ofi wood heels. from .Wood-"heel"v blocks o'r bl-ankisg2eonsists in. shaping-` opposite.l

sides ofthe-block. vTo -Ltliis end,l .the block is clamped between lower andupper jaws 4fandl 6 of a clamp 8 that is mounteduponuajack 24; and l its 1 opposite .-sidesfj are successively presented tol the! action of two horizontallyspaced, turning cutters L10. and f12itl`1latfrotate at: high speed around 'lvertioal axes 7" and' 9g In the drawings, the.' woodheel y'is.illustratedas it Yappears -a-ft'ertlie cutters -10`and 12-fhave already perfrmedftheirturningkoperations. Originally, however, at the time Y that it is l Iirst placed .inthe-clamp, it'is'in` theformof-fan unshaped,l wood block, except-that f the breast 11 lias' .previously.- been-1groeved. The i jaeln 24 1 may be .swung by. the operatorhorizontally over aljcurvedtrack14bylmeans of af handle 16".- Wh'enthefjaekis -swung in one directioinfthe wood Tblock will be presented'- to the-cutter 10;. andwhenswung inthe opters land 1 2. The-jaek24isffikedtoy a rod -or .shaft 22fthat-1is curnaledfiny bea-rings -30VI of the armf i The arm 25, therefore,- acts positeI direetion, to the cutter 12i- In order'to'- permit of such swinging movement,j the jack 24 is carried by a horizontally disposed-arm i 25 that is.v liked lbfy: *seti screws- 27' or the; like tically disposed ybeaiifiifgs 17 f offtheb'ase 18 Io the; m'a `:l1ine,` intrmediately. between Ithe cutasf-ar kind offli'nlA betweenfthelvrods 20 andf'22v,

It is fXed'to the swinging rod20 butpermitsabout the; axis. of the, rod $22 inA the. 'bearings The.' j ackl is lthusr horizontally swingable; with the xrod" .20; about thefvertical vaxis olfpthe 55 5 latter from 1an intermediate lposition-between the. cutters, asillustrated-in the drawings,- toei. ward-"eitherl cutteri 10 :an-df12; and after. the` jack hasv been.v swung fallfthe.way? around tot one cutter or the. othelg.it;is..-rockedabuathe` ab: vertically disposed- :rod or shaft-22, sof as. to.. present successive.. portionskof ytlrefsde;of?.the.l` heel block to. fthe.. cutter. and. thus .turni thea whole side from` thefbreast11@outward.I

- Astlre j aekr24-is swun-gby the,operati.).rover.. thet-rackl'll; a roller29, that is. attached to` the- Jaek 24, engagesthetracklt toltilt tliefjvaelr,v 24 `about ai horizontal-pivotpin 26; Thenpi'vot pin 26fzisvcarried by. an. arm-28' thatl extnds outf'fromthev .upper end ofthe rod i:22; The.; 7e f pivot pin 26fiisa.;als`o. .movable vertically; SQ-asf teraisefand lower the' heehbloeki-asitfis acted* on.; by. the :cutters- Such verticalInovementf` is permitted byliaving-ther0 d;22:1vertica1ly. movab'lezin theabearings 30.5013 the.arm.;25. The verticalmovement of ftheA rod .22` is .automatically eected :duringthe swinging .ofzthe j afele 24 as roller 32. .thatf isimounted t:at -thef lower end.' ofthe. rod 221s@ as :to .ridefoverfa second-curveditrack341 As the 4jaekis swung; back .and iforth', Iirsttoward-.thefcutter .103, and-- their-.toward tliecuttenl2gfthe :track -icauses the pivotal'point 26 to Viisexan'd -all,f.y andthe. track;v 141 causesfthe roller. 252 to; .rises and alh The `ultimatecomposite movement,. in connerition withy the shape. oftheeuttersflfl fand 12, determines y the.` resulting; shape; ofth'e heel. rEhelmaehine, asso :far described; is of well-. known type, andflthevpurposev ofrithisbrief-'f description `is merelytofprovide alsettingfor e9- thefeatures. of novelty aboutto be describ'ed.'

Thouglboth. cutters -10 and 112 arelcontinuously. in.` operation, only: one cutter. atfa time isdoing any aetual cutting and for A'agreat portion-.ofjth'etima the .jacklisin-tl-e inter- D5 mediate position, neither cutter. beingthenin use, At-tlietime-that thej ack: has beenf'swung-- aroundfto eitherlthe cutter 10 or theeutter .12,"N the operator7s. attention is -.concentrated on that partieular'cutter, and-there is alittle. G0

sir

danger, therefore, of his accidentally placing his hand in Contact therewith, or otherwise becoming injured thereby. lVhichever cutter is thus concentrated upon, however, the other cutter is receiving no such attention, and may cause injury, either to the operator himself or to a fellow workman. When the jack occupies its intermediate position, furthermore, both cutters are a source of accidental danger, and it is by no means an uncommon experience for even the most experienced turners to reach a hand absent-mindedly toward one cutteror the other, while clamping and unclampinv the blocks. Y

According to the present invention, therefore, `novel means are provided foi` guarding against :injury from both cutters when the jacl; occupies its intermediate position; and

' for guardingagainst injury from'either cutter when the operator is presenting a Vheel block to the other cutter. Separate guards 86 and 38, one for each cutter,`are preferred, the guards being interposed between both cutters 10 and 12 and the clamp 8 when the jacl occupies its intermediate position, and one or the other guard being automatically movable out of its interposed position when the operator swings the jack over from the intermedil ate position toward the corresponding cutter.

The guards are so designed as` completely to enclose their respective cutters, and are connected with the operating mechanism of the machine so that the swinging movement of the jack automatically elfects movement of the guards. A guard of such completely enclosing type7ensures against accident even to others than the operators. It is preferred to eifect'the movement of the guards `from :an end of the swinging rod 20. Y

Normally, when the jack occupies i's mid-position, the guards 36 and 38 occupy their cutter-enclosing or protecting position. When the jack isswung from the intermediate position towards Athe left-hand c utter 10, the guard Y88 becomes automatically raised, as shown in Fig. 5, so as to expose they cutter. 10 and permit its shaping one sideof the 'wood-heel block 2. When the jack. is moved in the opposite direction from its inidposition, toward the cutter 12, the guard 36 will be similarly raised to permit the cutter 12 to operate on the opposite side of the block 2. kThe guards are returned to their normal position by gravity. f

In order to effect the raising ofthe guards, they are pivoted to swing in verticalV planes about horizontal pivots 66 and 68, respectively,each `fixed near one of the cutters. The guards are provided with an arm 70 and 7 2,

respectively,"adapted to be engaged by pins.

74 and 7 6, respectively, that extend out from ahorizontally disposed rockingspindle 78. The front end of the spindle is'provided with a cam that is disposed between two vertically VVdisposed kpinsr82 ,and 84 that stand up from the upper end of the swinging rod Q0. Vhen the jack is swung over the track 14 by the handle 16, therefore, causing the rod 2O to swing therewith, the spindle 78 will swing to correspond.- When the spindle 78 occupies the position illustrated in Fig. 5, the guard 38 will accordingly be raised. lVhen thespindle 78 is returned to the mid-position, along with the jack 24, the guard 38 will be lowered by gravity towards its normal or protecting position, illustrated in Figs. l to .4. Any further movement of the spindle 78 in the same direction will have no effect upon the guard 36. v

Such further movement will, however, effect the raising of theguard 38 through the pins 74 and v76. i lWhen the spindle 78 is returned to the mid-position, the guard 38 will I sons skilled in the art, and all fsuch are conl sidered to fall within the spirit and scope of the invention, as delined inthe appended Claims. f

`lVhat is claimed is:

- l. A heel-turning machine having, in combination, two horizontally spaced cutters for respectively turning opposite sides of'a `heel block, a clamp for holding the heel block, Va ljack upon which the clamp is mounted, means for swinging the jack from anintermediate position between the cutters toward either cutter, a pivot fixed near each cutter, a hooded guard pivoted to swingH about each pivot so as to enclose and uncover the respective cutters, the guards enclosing the respective cutters when the jack occupies the intermediate position, each guard hav-. ing an extension on the other side of its pivot, l

and means for engaging the respective eX'- tensions to pivot each guard to uncover its cutterv when the Jack is swung from vthe intermediate position toward the correspond-` ingA cutter. Y i

2. A heel-turning machine having, in combination, two horizontally spaced cutters for respectively turning opposite sides ofa heel block, aclainp for holding theY heel block, a jack upon which the clamp is -mounted, means for swinging the jack from an intermediate position between the cutterstoward each cutter, a guard for each cutter, thc guards being interposed betweenE the.

cutters and the clamp when the jack occupies the intermediate position and each being pivoted to swing in vertical planes about af horizontal pivot into and out of interposed n positions, and means for pivoting each guard y out of its interposed position when the jack is swung from the intermediate position toward the corresponding cutter.

3. A heel-turning machine having, in combination, two spaced-apart cuttersY Vfor respectively turning opposite sides of a heel block, a clamp for holding the heel block, a jack upon which the clamp is mounted, a swinging rod intermediately disposed 'between the cutters and to which the jack is fixed so as to swing with. the rod about the axis of the rod from an intermediate position between the cutters toward either cutter, a horizontally disposed spindle adapted to be rocked in opposite directions in accordance with the direction of swinging movement of the jack from the intermediate position toward either cutter, means carried by the swinging' rod for rocking the spindle, a guard for each cutter, the guards being interposed between the cutters and the clamp when the jack occupies the intermediate position, and each being pivoted to swing in directions outward out of, and inward into` interposed position, and means carried by the spindle for engaging the guards to cause each guard to pivot in a direction outward outof interposed position when the jack is swung from the intermediate position toward the corvv responding cutter.

ln testimony whereof, we have hereunto subscribed our names this 26th day of'October, 1927.

n A WESLEY J. SHAW. MILES E. BASTOW. 

